25.2V 8Ah IP68 Waterproof Lithium Battery for ROV, Underwater Drones & AUVs — Underwater Hot-Swap, 50–60m Depth, 60A Discharge
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Balder Power 25.2V / 8Ah NCM lithium battery engineered for ROVs, AUVs, and underwater drones requiring sustained high-current output at operational depth
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IP68 waterproof to 50–60 meters; supports underwater hot-swap — battery exchange without surfacing the vehicle
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60A continuous discharge (7.5C) — delivers sustained current for multi-thruster systems, directional vectoring, and counter-current operation
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1.8kg / 180×72×72mm compact cylindrical form factor; 800-cycle service life; −20°C to +60°C operating range
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UN38.3, CE, ISO, CB, CCC, PSE certified; NCM or LiFePO4 configurable; factory direct wholesale, OEM warmly welcomed
وصف المنتج
The Balder Power 25.2V 8Ah lithium battery is engineered for ROV, AUV, and underwater drone platforms that operate at the intersection of three demanding requirements: sustained high-rate discharge for multi-thruster propulsion, pressure-rated waterproofing at 50–60 meter operational depth, and the ability to exchange the battery underwater without surfacing the vehicle.
At 25.2V / 8Ah, this pack stores 201.6Wh in a 180 × 72 × 72 mm cylindrical form factor weighing 1.8 kg. The 72mm diameter cross-section is sized to fit the standard pressure tube housings used across the majority of small-format ROV and AUV platforms, allowing direct integration without custom mechanical adapters. The 60A continuous discharge rating (7.5C) provides the instantaneous current headroom that multi-thruster underwater vehicle systems require during full-thrust maneuvers, counter-current station-keeping, and rapid depth transitions — operating conditions where 1C or 2C rated batteries trigger BMS overcurrent protection at precisely the moments when maximum thruster authority is needed.
The IP68 enclosure is pressure-rated to 50–60 meters depth, covering the full operational envelope of commercial inspection ROVs, harbor and coastal survey AUVs, and underwater drone systems used in infrastructure inspection, scientific sampling, and search operations. At this depth, hydrostatic pressure reaches approximately 6 bar — the enclosure sealing system is validated under sustained pressure loading across the repeated dive cycles that characterize professional fleet operations.
The underwater hot-swap capability is the operational differentiator for fleet ROV and AUV operators: a depleted pack can be removed and a charged unit installed while the vehicle remains submerged, eliminating the surface retrieval, deck handling, and re-deployment time that conventional battery exchange requires. For survey campaigns where multiple vehicles operate continuously across long shifts, this capability directly increases the number of productive dive-hours per vehicle per day. NCM chemistry (800 cycles) is the standard configuration; LiFePO4 is available for operators requiring extended cycle life within the same form factor.
المعايير الفنية
| المعلمة | مواصفة |
|---|---|
| ماركة | قوة بالدر |
| Application | ROV, AUV, underwater drones, multi-thruster underwater propulsion systems |
| نوع البطارية | Li-ion (NCM standard / LiFePO4 configurable) |
| Cathode Materials | LiNiMnCoO2 (NCM) / LiFePO4 configurable |
| الجهد الاسمي | 25.2V (fully charged) |
| السعة المقدرة | 8Ah |
| طاقة | ~201.6 Wh |
| تصنيف IP | IP68 — depth-rated to 50–60 meters |
| Underwater Hot-Swap | Supported |
| تيار التفريغ المستمر الأقصى | 60A (7.5C) |
| تيار الشحن الأقصى | 1C (8A) |
| حماية | Short circuit, overcharge, over-discharge, over-temperature, IP68 sealed enclosure |
| دورة الحياة | 800 cycles |
| درجة حرارة التشغيل | −20°C to +60°C |
| Dimensions (L × W × H) | 180 × 72 × 72 mm (7.09 × 2.83 × 2.83 in) |
| وزن | 1.8 kg (3.97 lb) |
| الشهادات | UN38.3, ISO, CE, CB, ICC, CCC, MSDS, PSE |
| ضمان | 12 شهرًا من تاريخ الشحن |
| تصنيع المعدات الأصلية / تصميم وتصنيع المعدات الأصلية | Warmly welcomed — voltage, capacity, depth rating, connector type, chemistry customizable |
| مكان المنشأ | قوانغدونغ، الصين |
الميزات والمزايا
✅ 🔄 Underwater Hot-Swap: Continuous Operations Without Vehicle Recovery
The Balder Power 25.2V 8Ah pack is designed to support underwater battery exchange — the connector and locking mechanism allow a depleted pack to be removed and a charged unit installed while the ROV or AUV remains at operational depth, without surfacing the vehicle or interrupting the dive. For ROV operators running extended inspection campaigns, harbor survey teams with multiple vehicles in rotation, and research AUV fleets managing long-shift data collection, this capability eliminates the surface transit time, deck handling cycle, and re-deployment sequence that conventional battery exchange requires. Each hot-swap cycle saves 10–20 minutes of vehicle downtime depending on water depth, translating directly into more bottom time per shift and higher data collection efficiency per operating day.
✅ 🌊 IP68 Pressure-Rated to 50–60 Meters: Professional ROV Operational Depth
The enclosure is validated to IP68 standard at 50–60 meters depth under sustained hydrostatic pressure loading — not momentary submersion. At 50–60 meters, pressure reaches approximately 5–7 bar, loading the enclosure seals, cable penetration potting, and connector interface geometry at levels that reveal any design weakness in standard marine IP68 products tested only to 1–3 meter consumer standards. The sealing architecture uses dual-barrier O-ring gaskets with epoxy-potted cable exits, maintaining full IP68 integrity across repeated pressure cycling as the vehicle ascends and descends through the operational depth range. Pressure test documentation is available for OEM integration qualification and institutional procurement audits upon request.
✅ ⚡ 60A / 7.5C Continuous Discharge for Multi-Thruster ROV Propulsion
At 60A continuous (7.5C from an 8Ah pack), this battery delivers the sustained current output that multi-thruster ROV and AUV propulsion systems require during maximum-thrust maneuvering. The 7.5C rating places this pack in the high-rate category typically associated with RC and drone applications — applied to a subsea vehicle, it means the power system never becomes the limiting factor in thruster authority during the high-demand phases of underwater operation: fighting a cross-current, executing a rapid ascent for obstacle avoidance, or maintaining precise hover position during camera inspection or sampling operations. The 1C maximum charge rate returns a depleted pack to full capacity in approximately 1 hour on a compatible 8A charger, supporting high-turnover hot-swap rotation schedules.
التعبئة والتوصيل
تغليف آمن ومتوافق مع المعايير
لضمان النقل الآمن للبضائع الخطرة من الفئة 9، يتم حماية كل بطارية بـ صوف لؤلؤي عالي الجودة (رغوة البولي إيثيلين الموسع) ومغلفة بـ كرتون معتمد من الأمم المتحدة. بالنسبة للشحنات الكبيرة، نستخدم مواد متينة منصات خشبية أو بلاستيكية مغلفة بغشاء بلاستيكي قابل للانكماش، ومتوافقة تماماً مع لوائح الشحن الدولية.
خيارات الشحن العالمية (إنكوترمز)
نحن ندعم شروط الشحن المرنة التي تناسب احتياجات عملك، بما في ذلك FOB، CIF، وDDP (من الباب إلى الباب شامل الضريبة).
- عن طريق البحر: الخيار الأكثر اقتصادية للطلبات الكبيرة.
- عن طريق الجو / السريع: توصيل سريع للعينات (DHL/UPS/FedEx).
- بالقطار: خدمة CR Express الموثوقة للأسواق الأوروبية والآسيوية الوسطى.
مدة الإنتاج
تختلف مدة التسليم لدينا بناءً على تخصيص المنتج:
| نوع المنتج | عينات | طلب بالجملة |
|---|---|---|
| النماذج القياسية | 5 - 7 أيام | 14 - 20 يومًا |
| نماذج مخصصة | 7 - 14 يومًا | 14 - 28 يومًا |
معايير السلامة العالمية والامتثال لمتطلبات الشركات المصنعة الأصلية
عند دمج بطارية ليثيوم مخصصة في جهازك، يُعدّ الالتزام بالمعايير التنظيمية أمرًا بالغ الأهمية. في بالدر باور، صُممت حلول بطارياتنا الأصلية من الصفر لتجتاز اختبارات السلامة الدولية الصارمة. نضمن أن بطارياتك المخصصة تلبي معايير الأداء CE وUL وIEC، مع توفير تقارير UN38.3 وMSDS الإلزامية اللازمة للشحن العالمي السلس. بدءًا من النموذج الأولي وحتى الحصول على الشهادة النهائية، نزيل عقبات الامتثال لتسريع دخول منتجك إلى السوق.
التعليمات
Q1: What is the actual pressure-tested depth and how is the underwater hot-swap mechanism sealed at depth?
The Balder Power 25.2V 8Ah pack is IP68 validated to 50–60 meters under sustained hydrostatic pressure — approximately 5–7 bar. The hot-swap connector and locking mechanism use a wet-mate design where the mating faces form a compression seal during connection, maintaining IP68 integrity at rated depth both in the connected state during operation and in the disconnected state during exchange. The connector design allows the exchange to be completed at operational depth without requiring the vehicle to ascend to a lower-pressure zone. Pressure test reports are available upon request for OEM integration qualification.
Q2: How does the 7.5C discharge rating benefit ROV and AUV performance compared to standard marine batteries?
Most portable marine batteries are rated for 1C or 2C continuous discharge. At 2C from an 8Ah pack, maximum current is 16A — sufficient for low-thrust trolling but insufficient for the 60A peak demand of multi-thruster ROV maneuvering at full authority. The Balder Power pack’s 7.5C rating delivers 60A continuously, meaning the BMS never throttles output during high-demand thruster phases. In practical ROV operation, this translates to full directional authority in cross-current conditions, faster depth transitions, and consistent camera platform stability during station-keeping — without the voltage sag and BMS cutoff events that interrupt vehicle control when underpowered batteries are pushed beyond their rated discharge limit.
Q3: What is the minimum order quantity and is OEM/ODM customization available?
Standard wholesale minimum order is 10 units, with tiered pricing at 30, 50, and 100+ units. OEM/ODM customization covers voltage, capacity, cell chemistry (NCM or LiFePO4), depth pressure rating, connector type and wet-mate configuration, cable jacket material, and enclosure markings. OEM minimum is 50 units with a 7–10 working day lead time after sample approval. Engineering samples (1–3 units) are available before volume commitment. All shipments include UN38.3, CE, and applicable certification documentation.
Q4: What is the expected runtime on a typical ROV thruster configuration, and how does hot-swap rotation work in practice?
Runtime depends on thruster load profile. At moderate cruise thrust (10–15A total draw), a single 8Ah pack provides approximately 30–45 minutes of runtime. At maximum thrust (60A), approximately 8 minutes continuous. In typical ROV inspection operations alternating between cruise and station-keeping, practical runtime is 20–35 minutes per pack. With two packs in rotation — one operating while the other charges at 1C for 1 hour — a single ROV can maintain near-continuous bottom time with a 5-minute surface exchange interval between dives, or zero surface time with underwater hot-swap capability.
Q5: What connector types are compatible and how are cable exits sealed for the 50–60m depth rating?
Standard connector options include XT60, XT90, SubConn circular series, and Blue Robotics-compatible wet-mate connectors. All cable exits through the enclosure use epoxy potting with secondary O-ring compression seals rated for sustained pressure loading at 50–60 meters. For OEM integration into existing ROV or AUV pressure housings, bare cable exit configurations with specified jacket material are available. The 72mm diameter cross-section is compatible with standard 3-inch pressure tube housings used across Blue Robotics, VideoRay, and equivalent small-format ROV platform architectures.
Q6: How should the battery be maintained and stored between ROV operations?
Rinse the enclosure exterior and connector face with fresh water after each saltwater dive. For storage between operations, keep connector caps in place to protect mating surfaces. For extended storage exceeding 30 days, discharge to 50–60% state of charge and store between 10°C and 25°C in a dry environment. In cold-water operating environments (below 5°C water temperature), allow the pack to equilibrate above 0°C before commencing high-current thruster operations — cold NCM cells have higher internal resistance and reduced peak current capability until thermally stabilized. Perform a capacity verification discharge every 100 cycles to track remaining service life in high-utilization fleet operations.
